Open‐Circuit Voltage Loss Management for Efficient Inverted Wide‐Bandgap Perovskite Photovoltaics DOI
Yifan Li, Shaopeng Yang, Shancheng Yan

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Wide‐bandgap (WBG) perovskite solar cells (PSCs) are often used as the top of tandem (TSCs) to break theoretical efficiency limit single‐junction photovoltaic devices. Nevertheless, serious open‐circuit voltage ( V OC ) loss issue in WBG systems restricts development high‐performance cells. Based on understanding physical mechanism that determines photovoltaics, dominant factors larger summarized from three aspects: crystal defects, film composition, and device structure. Then is targeted perspectives: defect passivation crystals, crystallization dynamics regulation films, carrier management Finally, role transparent conductive oxide materials interconnect layers TSCs reviewed. By summarizing recent research progress, review provides a new perspective improve performance PSCs.

Language: Английский

Regulation of Wide Bandgap Perovskite by Rubidium Thiocyanate for Efficient Silicon/Perovskite Tandem Solar Cells DOI Open Access

Zhenhan Wang,

Zhaoyang Han,

Xinbo Chu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Developing high‐quality wide bandgap (WBG) perovskites with ≈1.7 eV ( E g ) is critical to couple silicon and create efficient silicon/perovskite tandem devices. The sufferings of large open‐circuit voltage V OC loss unstable power output under operation continuously highlight the criticality fully develop WBG perovskite films. In this study, rubidium thiocyanate as additive regulators in are incorporated, significantly reducing non‐radiative recombination, ion‐migration, phase segregation. optimized 1.66 solar cells achieved state‐of‐art 1.3 (0.36 deficit), delivered a stabilized conversion efficiency 24.3%, along good device stability (20% degradation (T 80 after over 994 h 1 sun at ≈65°C). When integrated flat front side cell, two‐terminal (30% efficient) obtained 1.97 , T 90 operational lifetime more than 600 room temperature.

Language: Английский

Citations

24
Efficient wide-bandgap perovskite photovoltaics with homogeneous halogen-phase distribution DOI Creative Commons
Rui Wang, Xiaoyu Liu, Shancheng Yan

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 15, 2024

Wide-bandgap (WBG) perovskite solar cells (PSCs) are employed as top of tandem to break through the theoretical limits single-junction photovoltaic devices. However, WBG PSCs exhibit severe open-circuit voltage (V

Language: Английский

Citations

20
Temperature-dependent self-trapped exciton emission in Cu(I) doped zinc-based metal halides from well-resolved excited state structures DOI

Bai Yunlong,

Shuai Zhang, Nengneng Luo

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(8), P. 7768 - 7775

Published: May 2, 2024

Language: Английский

Citations

13
Homogenizing the Halogen Distribution via a Multifunctional Fluorine‐Containing Additive Toward High‐Performance Inverted Wide‐Bandgap Perovskite Solar Cells DOI Open Access
Jiawen Li,

Shaofeng Zhu,

Chunyang Yin

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Wide‐bandgap perovskite solar cells, which are essential for tandem photovoltaics, easily suffer from open‐circuit voltage ( V OC ) losses due to challenges in suppressing halogen heterogeneity and defect‐related nonradiative recombination the active layers. Herein, a multifunctional fluorine‐containing additive of 8‐pentafluorobenzyloxy quinoline (8‐PFBQ) is explored modulate crystallization defect properties wide‐bandgap (1.67 eV) perovskites, enhancing both efficiency operational stability ensuing cells. It demonstrated that group 8‐PFBQ can strongly coordinate with lead ions fluorinated benzyl effectively interacts organic halides through anion‐π hydrogen bonding interactions simultaneously. These synergistic effects improve crystal quality composition homogeneity, holistically reducing defects The resulting cells achieve champion power conversion 22.22%, featuring high 1.243 two‐fold enhancement stability. This work presents an alternative strategy management offering insights advancements single‐junction photovoltaics.

Language: Английский

Citations

2
Improvement of Photovoltaic Performance of Perovskite Solar Cells by Synergistic Modulation of SnO2 and Perovskite via Interfacial Modification DOI

Jinliang Shen,

Xiang Ge,

Qing Ge

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(19), P. 24748 - 24759

Published: May 1, 2024

In the past decade, perovskite solar cell (PSC) photoelectric conversion efficiency has advanced significantly, and tin dioxide (SnO2) been extensively used as electron transport layer (ETL). Due to its high mobility, strong chemical stability, energy level matching with perovskite, easy low-temperature fabrication, SnO2 is one of most effective ETL materials. However, material an limitations. For example, films prepared by spin-coating contain a large number oxygen vacancies, resulting in loss open-circuit voltage (VOC) loss. addition, crystal quality perovskites closely related substrate, disordered orientation will lead ion migration, uncoordinated Pb2+ defects. Therefore, interface optimization essential improve stability PSC. this work, 2-(5-chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol (CBTBC) was introduced for modification. On hand, hydroxyl group CBTBC forms Lewis mixture Sn atom, which reduces vacancy defect prevents nonradiative recombination. other SnO2/CBTBC can effectively influencing crystallization kinetics nitrogen element passivate defects at SnO2/perovskite interface. Finally, prevailing PCE PSC (1.68 eV) modified 20.34% (VOC = 1.214 V, JSC 20.49 mA/cm2, FF 82.49%).

Language: Английский

Citations

9
Suppression of Light-Induced Phase Segregations in Mixed Halide Perovskites through Ligand Passivation DOI
Arup Ghorai, Sudarshan Singh, Baidyanath Roy

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1760 - 1768

Published: Feb. 11, 2025

Mixed halide perovskites (MHPs) are useful for tandem solar cells and optoelectronic devices due to their absorption emission tunability over the whole visible spectrum improved stability. However, one of main challenges is phase segregation under continuous illumination or applied bias, which hinders utilization applications with full potential. Here, in this letter, we studied MHPs, especially a focus CsPbI1.5Br1.5 325 nm laser through photoluminescence (PL) spectroscopy real-time video illumination. We provided remedy prevent unwanted using 1-dodecanthiol (DSH) ligand treatment. It also observed that, during relaxation dark conditions, PL characteristics can even be reverted original condition. Following passivation, film sustain almost 4 min high-power irradiation without any degradation segregation, as spectroscopy. Thereafter, negligible separation occurs after exposure light min. A demonstrates efficacy DSH suppression dispersion. The observation supported by density functional theory calculations, showing that effectively passivate vacancies suppress

Language: Английский

Citations

1
Contact Potential Homogenization via Buried Interface Engineering Enables High‐Performance Wide‐Bandgap Perovskite Photovoltaics DOI Open Access
Yaxiong Guo,

Shengjie Du,

Weiqing Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Microscale imperfections and inhomogeneity at buried interface leads to energy losses insufficient carrier extraction of wide bandgap (WBG) perovskite solar cells (PSCs). Here, we report a collaborative strategy by introducing 3‐aminopropanoic acid (3‐APA) mix with [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl]phosphonic (Me‐4PACz) as hole‐selective self‐assembled monolayer (SAM). With the addition 3‐APA, wettability precursors is increased. Furthermore, film morphology heterogeneity improved. As result, nonradiative recombination interfacial loss are greatly suppressed. This also marginally higher ionization potential monolayers, approximating valence band film. Benefits from suppressed charge transfer loss, mixed SAM present overcome passivation transport trade‐off, delivering V OC × FF 84.5% S–Q limit. The combine benefits enable efficient 1.67 eV WBG PSCs power conversion efficiency 22.4% high open circuit voltage 1.255 fill factor 85.5%. Under strategy, demonstrat all‐perovskite tandem 28.4%.

Language: Английский

Citations

1
Difunctional Polymerizable Additive Enables Efficient and Stable Wide‐Bandgap Perovskites for Perovskite/Organic Tandems Solar Cells DOI
Honggang Chen, Jiaonan Sun, Kezhou Fan

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract In perovskite‐organic tandem solar cells, the wide‐bandgap perovskite front subcells with high bromide concentrations suffer from increased defect state density, which adversely affects efficiency and stability of devices. this work, a difunctional polymerizable additive, N‐(3‐(dimethylamino)propyl)‐methacrylamide (DPM), is introduced into 1.86 eV film, where it undergoes in situ thermal polymerization to form polymeric network. Primarily, polymer contains multiple functional groups that interact A‐site cations adjacent chains, creating dynamic hydrogen bond This network effectively passivates grain boundary defects, inhibits ion migration, consequently reduces non‐radiative recombination. addition, storage mixed FA + /MA precursor solution enhanced, as condensation reaction between MA efficiently suppressed by DPM. As result, study achieves power conversion (PCE) 18.19% cells. The device retains 84% its initial after operating at maximum point for 1000 h. Most notably, PCE 25.06% achieved integrating subcell monolithic cell.

Language: Английский

Citations

1
Photoinduced phase segregation in wide-bandgap mixed-halide perovskite solar cells DOI Creative Commons
Yue Yu, Xinxing Liu, Sam Zhang

et al.

Energy Materials and Devices, Journal Year: 2024, Volume and Issue: 2(2), P. 9370037 - 9370037

Published: May 30, 2024

Wide-bandgap (WB) mixed-halide perovskite solar cells (PSCs) play a crucial role in perovskite-based tandem (TSCs), enabling them to exceed the Shockley-Queisser limits of single-junction cells. Nonetheless, lack stability WB films due photoinduced phase segregation undermines PSCs and their TSCs, thus impeding commercialization TSCs. Many efforts have been made suppress significant progresses obtained. In this review, we elaborate mechanisms behind its impact on photovoltaic performance devices. The importance advanced characterization techniques confirming are comprehensively summarized. Beyond that, effective strategies alleviate mixed halide systematically assessed. Finally, prospects for developing highly efficient stable application also presented.

Language: Английский

Citations

4
Design and optimization of all-inorganic lead-free perovskite solar cells with RbGeI3/KSnI3 heterojunction structure DOI
Weikai Fan,

Chunliang Ding,

Le Chen

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 40, P. 109749 - 109749

Published: July 3, 2024

Language: Английский

Citations

4